Gatekeepers are a above allotment of average to ample H.323 VoIP arrangement solutions. When
used, these apparatus acquiesce for dial-plan scalability and abate the charge to manage
global punch affairs locally. In this chapter, you will apprentice the functions of a attendant and
directory gatekeeper. Additionally, you will apprentice how to configure gatekeepers to interoperate
with gateways and how to accommodate attendant back-up in average to large
VoIP networks.